Basic cooling characteristics of perfluorocarbon liquid immersed windings for nonflammable transformers; Disk coil cooling for large-capacity forced circulating transformers. Part 1

Journal Article · Mon Dec 31 23:00:00 EST 1990 · Heat Transfer - Japanese Research; (United States)

OSTI ID:7291332

Yamazaki, H; Sakamoto, T ^[1]; Takagi, I ^[2]

---

1. Mechanical Engineering Research Lab., Hitachi, Ltd. (JP)
2. Chubu Electric Power Co., Inc., Keizaburo Hawashima (JP)

This paper reports that to develop a new type of nonflammable large-power transformer which uses perfluorocarbon liquid as the cooling and insulation medium, the basic cooling characteristics of the liquid were investigated. Using a horizontal coil duct model, design data on heat-transfer characteristics of perfluorocarbon liquid were obtained by the computer program. Using a two-dimensional cooling model of nine coils per section, the velocity distribution in the coil ducts and the temperature rise distribution of the coils were clarified. Comparisons were made between experimental and calculated results and the developed computer program was found to be valid for the prediction of the velocity distribution in the coil ducts and of the temperature rise distribution of the coils.

• OSTI ID: 7291332
• Journal Information: Heat Transfer - Japanese Research; (United States), Journal Name: Heat Transfer - Japanese Research; (United States) Vol. 20:7; ISSN 0096-0802; ISSN HTJPA
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
240100 -- Power Systems-- (1990-)
42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
CALCULATION METHODS
COMPUTER CODES
CONVECTION
DESIGN
ELECTRICAL EQUIPMENT
ENERGY TRANSFER
EQUIPMENT
FLUIDS
FORCED CONVECTION
HEAT TRANSFER
MASS TRANSFER
TRANSFORMERS
TWO-DIMENSIONAL CALCULATIONS
WORKING FLUIDS